Phenomenology of Supersymmetric Grand Unified Theories and Standard Model

在这个项目中，我在超对称模型的唯象学和基于超对称性的模型建立方面取得了以下成果：1.轻子味破坏过程的研究。轻子味破坏过程，如μ→eγ，在寻找斯普顿部门的味道结构方面具有重要意义。在这里，我们研究了超对称大统一理论和带有跷跷板中微子的超对称模型中轻子味道变化过程的各个方面。也就是说，我们计算了这些模型中的μ→eγ分支比，并讨论了在μ→3e衰变中测量T奇非对称性的可能性，在tau衰变中测量轻子味道破坏的可能性，以及在对撞机实验中测量轻子混合的可能性。这些结果对未来轻子味违背的实验研究是有用的。从夸克味物理和介子反常磁矩出发寻找超对称性，计算了B工厂物理中的超对称粒子效应、Kano稀有衰变效应和一些超对称模型实例的介子反常磁矩，并讨论了间接寻找超对称性的可能性。新模式的提出。我们提出了新的模式。一个模型旨在通过水平对称性解释费米子的质量等级，另一个模型在不同世代的标量夸克之间产生大的质量分裂。

In this project I obtained the following results on phenomenology of supersymmetric models and model building based on supersymmetry.1.Study on lepton flavor violation processes.Lepton flavor violating processes such as μ→eγare important in searching for the flavor structure of the slepton sector. Here, we studied various aspects of lepton flavor changing processes in supersymmetric grand unified theories and supersymmetric models with seesaw neutrinos. Namely, we calculated the μ→eγbranching ratio in these models and discussed the possibility of measuring a T-odd asymmetry in the μ→3e decay, lepton flavor violation in tau decays, and the slepton mixing in collider experiments. These results are useful for future experimental searches for the lepton flavor violation.2. Search for supersymmetry from quark flavor physics and the muon anomalous magnetic moment.We calculated the effects of supersymmetric particles in physics at B factory, Kano rare decays, and the muon anomalous magnetic moment for some examples of supersymmetric models, and discussed possibilities of indirect search for supersymmetry.3. Proposal of new models.We proposed new type of models. One model is intended to explain the fermion mass hierarchy by a horizontal symmetry, and the other generates a large mass splitting among scalar quarks with different generations.